In this article, we elaborate on why the cultivation of the Ziziphus is important in the arid regions of Pakistan and how it can alleviate the poverty and food insecurity in these areas. The recent impact of climate change has resulted in the spread of hot and dry regions. The cultivation of Ziziphus species could be a solution to food insecurity and income for the residents of arid and semi-arid regions in Pakistan. Furthermore, Ziziphus species are offering extremely nutrient-dense foods. Six species of Ziziphus are found in Pakistan, but production statistics are not available for all species. The most economically important species are Z. jujuba and Z. mauritiana, followed by Z. nummularia, based on the consumption of their fruits. A framework of policy and practical proposals required for the cultivation of these species in Pakistan has been provided. Ziziphus, an economically important genus of fruit-bearing plant species, is cultivated in arid and semi-arid regions of the world. Therefore, the species of this genus could be efficiently and successfully cultivated in marginal ecosystems for alleviating food insecurity and poverty reduction in Pakistan. Furthermore, Ziziphus species like Z. jujuba and Z. mauritiana have promise as a cash and food crop, especially in water-deficient areas of Pakistan, and their production and conservation must be encouraged by state policy.

The Ziziphus mauritiana Lam. and Z. jujuba Mill. are the two most economically important members of the genus Ziziphus. The fruit color of Z. mauritiana remains green throughout fruit development in the majority of commercial cultivars, whereas its close relative, Z. jujuba Mill. turns from green to red in all cultivars. However, the lack of transcriptomic and genomic information confines our understanding of the molecular mechanisms underlying fruit coloration in Z. mauritiana (Ber). In the present study, we performed the transcriptome-wide analysis of MYB transcription factors (TFs) genes in Z. mauritiana and Z. jujuba, and identified 56 ZmMYB and 60 ZjMYB TFs in Z. mauritiana and Z. jujuba, respectively. Through transcriptomic expression analysis, four similar MYB genes (ZmMYB/ZjMYB13, ZmMYB/ZjMYB44, ZmMYB/ZjMYB50, and ZmMYB/ZjMYB56) from Z. mauritiana and Z. jujuba were selected as candidate key genes regulating flavonoid biosynthesis. Among these genes, the ZjMYB44 gene was transiently highly expressed in fruit, and flavonoid content accumulation also increased, indicating that this gene can influence flavonoid content during the period of fruit coloration in Z. jujuba. The current study adds to our understanding of the classification of genes, motif structure, and predicted functions of the MYB TFs, as well as identifying MYBs that regulate flavonoid biosynthesis in Ziziphus (Z. mauritiana and Z. jujuba). Based on this information, we concluded that MYB44 is involved in the flavonoids biosynthesis pathway during the fruit coloring of Ziziphus. Our research results provide an important understanding of the molecular mechanism of flavonoid biosynthesis resulting in fruit coloration and laying a foundation for further genetic improvement of fruit color in Ziziphus.